Ok, I should probably know this but what is the real difference and/or risk in using automotive grade R134a for appliance use? I know the appliance grade stuff is tested for purity and dryness beyond that of automotive grade but would the system hold up in the long run for domestic appliances? I'm 608 certified and was always taught since the beginning to use appliance grade r134a (and I do) but I hear of others using automotive grade and wondered if anyone here does it or has any insights. Is it worth saving a few bucks to buy auto grade?
Thanks

Brian

____________________Duct tape and bailing wire! And yes, I DO mind if you clean behind that while I have it out!!